Plastic Scintillators via Rapid Photoinitiated Cationic Polymerization of Vinyltoluene

Chandler, Caleb; Porcincula, Dominique H.; Ford, Michael J.; Hook, Connor; Zhang, Xianyi; Brodsky, Jason; Sellinger, Alan

doi:10.1021/acsapm.2c00316

Title: Plastic Scintillators via Rapid Photoinitiated Cationic Polymerization of Vinyltoluene

Journal Article · Mon May 16 00:00:00 EDT 2022 · ACS Applied Polymer Materials

DOI:https://doi.org/10.1021/acsapm.2c00316· OSTI ID:1878577

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Colorado School of Mines, Golden, CO (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Cationic photopolymerization is applied for the rapid curing of a vinyltoluene and fluorophore solution into an efficient plastic scintillator. A hard solid is obtained via UV light-initiated polymerization of vinyltoluene, diaryliodonium salt, 9,9-dimethyl-2-phenylfluorene (PhF), and 9,9-dimethyl-2,7-distyrlfluorene (SFS) at ambient conditions with high conversion rates under a range of cationic photoinitiator concentrations, fluorophore concentrations, and light intensities. Insight into photopolymerization kinetics via photo differential scanning calorimetry (photoDSC) revealed photocuring time scales similar to those achieved in a commercial 3D printing resin. Furthermore, scintillator samples prepared cationically performed well compared to samples of equivalent compositions prepared by a lengthy thermally initiated radical polymerization.

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Research Organization:: Georgia Institute of Technology, Atlanta, GA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation; Colorado School of Mines

Grant/Contract Number:: NA0003921; AC52-07NA27344

OSTI ID:: 1878577

Alternate ID(s):: OSTI ID: 1883036

Report Number(s):: LLNL-JRNL-830825; LLNL-JRNL-830825; TRN: US2307532

Journal Information:: ACS Applied Polymer Materials, Vol. 4, Issue 6; ISSN 2637-6105

Publisher:: ACS PublicationsCopyright Statement

Country of Publication:: United States

Language:: English

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